Snell law for electromagnetic waves
= Snell law for electromagnetic waves
{c}
For refractive indices $n_-$ and $n_+$,
$$
\theta_R=\theta_I,
\qquad
n_-\sin\theta_I=n_+\sin\theta_T.
$$
= Snell law for electromagnetic waves
{c}
For refractive indices $n_-$ and $n_+$,
$$
\theta_R=\theta_I,
\qquad
n_-\sin\theta_I=n_+\sin\theta_T.
$$